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maw [93]
3 years ago
12

PLEASE HELP FAST please

Mathematics
1 answer:
IRINA_888 [86]3 years ago
4 0

Answer:

889 hours.

Step-by-step explanation:

Divide $7,993 by $3, you get a decimal so you increase it to the next hour so you can have all the needed money.

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Sin^2(x/2)=sin^2x <br> Find the value of x
Veronika [31]
\sin^2\dfrac x2=\sin^2x
\dfrac{1-\cos x}2=1-\cos^2x
1-\cos x=2-2\cos^2x
2\cos^2x-\cos x-1=0
(2\cos x+1)(\cos x-1)=0
\implies\begin{cases}2\cos x+1=0\\\cos x-1=0\end{cases}\implies\begin{cases}\cos x=-\frac12\\\cos x=1\end{cases}

The first case occurs in 0\le x for x=\dfrac{2\pi}3 and x=\dfrac{4\pi}3. Extending the domain to account for all real x, we have this happening for x=\dfrac{2\pi}3+2n\pi and \dfrac{4\pi}3+2n\pi, where n\in\mathbb Z.

The second case occurs in 0\le x when x=0, and extending to all reals we have x=2n\pi for n\in\mathbb Z, i.e. any even multiple of \pi.
6 0
4 years ago
WHat is the answer to this (1−5q)+(2.5q+8)−(0.5q+6)
MA_775_DIABLO [31]

Answer:

-3q+3

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Kylie Matsumoto is a set designer. Her annual salary is $ 45,320. Kylie's semi-monthly salary is $ _________. (Round to the near
ivanzaharov [21]
The answer to this question would be: $1888.33/semi-month

To answer this question you need to convert the annual into semi-monthly. Annual mean every 1 year or every 12 months. Semi-monthly mean two times a month. Then the equation would be: $45,320 / year x (1 year/12month) x (1 month/2 semi-month) = $1888.33/semi-month
3 0
3 years ago
At noon, ship a is 40 nautical miles due west of ship b. ship a is sailing west at 18 knots and ship b is sailing north at 17 kn
igor_vitrenko [27]

The distance between the ships changing at 92.29 Knots

  • Using the position of ship A as the reference point, at time t measured in hours past noon, ship A is 18 t miles west of this point and ship B is 40 + 17t north of this point.
  • The distance between ships is then

                              d(t) = \sqrt{(18t)^{2} + (40+17t)^{2} } \\

The rate of change of distance is -

                              \frac{dd}{dt} = \frac{36t + 2(40 + 17t)17}{2\sqrt{18t^{2} + (40 + 17t) } }

after putting t = 5 into this rate of change ,

we get, answer = 92.29

To learn more about differentiation from the given link

brainly.com/question/25081524

#SPJ4

4 0
2 years ago
Kenny bought a new car stereo that cost $220, but he had a coupon for a 14% discount. How much did Kenny pay for the car stereo.
jok3333 [9.3K]

Answer:

189,2$

Step-by-step explanation:

220*0,86=189,2

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1-0,14 = 0,86

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7 0
3 years ago
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